Wet extraction technology of tin ore

Wet extraction technology of tin ore

Tin is an important metal material widely used in fields such as electronics, metallurgy, and chemical engineering. Tin ore is the main source of tin, and the wet extraction technology of tin ore is a commonly used extraction method. This article will introduce the operational steps and precautions of the wet extraction technology for tin ore.

1、 Overview of Wet Extraction Technology for Tin Ores

The wet extraction technology of tin ore refers to a series of processes such as crushing, sorting, soaking, separating, and refining tin ore, ultimately obtaining high-purity tin metal. The wet extraction technology of tin ore is mainly divided into sulfuric acid method and sodium hydroxide method. The sulfuric acid method is to soak tin ore in sulfuric acid solution, so that tin in cassiterite reacts with sulfuric acid to form Stannate, and then obtain tin metal through reduction, precipitation, drying and other processes. Sodium hydroxide method is to immerse tin ore in sodium hydroxide solution to make tin in cassiterite react with sodium hydroxide to produce tin hydroxide, and then obtain tin metal through reduction, precipitation, drying and other processes.

2、 Operation steps of wet extraction technology for tin ore

1. Tin ore crushing: The tin ore is preliminarily crushed through crushing equipment to make it a suitable material for further processing.

2. Tin ore sorting: The crushed tin ore is screened and washed to remove impurities and dust, resulting in a pure tin ore.

3. Tin ore soaking: Soak the pure tin ore in sulfuric acid or sodium hydroxide solution to make the tin in the cassiterite react with the chemical substances in the solution to generate Stannate or tin hydroxide.

4. Reduction of Stannate or tin hydroxide: reduce Stannate or tin hydroxide to convert it into metallic tin. The main reduction methods include chemical reduction and electrochemical reduction.

5. Tin metal refining: Refining the reduced tin metal to remove impurities and impure substances, obtaining high-purity tin metal.

Notes on Wet Extraction Technology of Tin Ores

1. The selection and soaking time of tin ore should be adjusted according to specific circumstances to ensure extraction efficiency and product quality.

2. During the reduction of Stannate or tin hydroxide, attention should be paid to controlling the amount of reducing agent and reduction conditions to avoid excessive or insufficient reduction.

During the tin metal refining process, attention should be paid to controlling temperature, time, and the amount of refining agent to ensure the high purity and good mechanical properties of the product.

Conclusion

The wet extraction technology of tin ore is an important tin metal production technology, with simple operation steps and clear process flow, which can effectively improve the yield and quality of tin metal. When using wet extraction technology for tin ore, attention should be paid to controlling the operating conditions and parameters of each link to ensure high quality and efficiency of the product.

Wet extraction technology of tin ore